The state has announced plans to pay the U.S. Navy $25 million for the South Weymouth Naval Air Station and hire Tri-Town Development Corp. to create a mixed-use development featuring nearly 3,000 homes and 2 million square feet of office and retail space. The deal is expected to close in November.

The US Department of Housing and Urban Development plans to award Boston’s Quincy Street neighborhood in Dorchester a $20.5 million redevelopment grant. According to a Sept. 1 report by the Boston Globe, some $12.3 million of the local grant will be used to renovate an 11-building cluster of housing developments.

To submit information related to local real estate transactions or personnel moves for the BBJ’s Real Estate Roundup, e-mail Sean McFadden at smcfadden@bizjournals.com.